300-320 Question #53: Real Exam Question with Answer & Explanation

The correct answer is C: GLBP. GLBP (Gateway Load Balancing Protocol) is the only FHRP that allows multiple physical gateways to actively and simultaneously participate in packet forwarding. GLBP elects one Active Virtual Gateway (AVG) and up to four Active Virtual Forwarders (AVFs), each forwarding traffic fo

Question

Which protocol should be configured if a network administrator wants to configure multiple physical gateways to participate simultaneously in packet forwarding?

Options

AHSRP
BVRRP
CGLBP
DVTP

Explanation

GLBP (Gateway Load Balancing Protocol) is the only FHRP that allows multiple physical gateways to actively and simultaneously participate in packet forwarding. GLBP elects one Active Virtual Gateway (AVG) and up to four Active Virtual Forwarders (AVFs), each forwarding traffic for a different subset of hosts. HSRP and VRRP only allow one active gateway at a time (the others remain in standby/backup). VTP (VLAN Trunking Protocol) is completely unrelated to gateway redundancy-it manages VLAN database synchronization.

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